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237717 Questions
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1391
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+24
question
How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t)=550e^-0.158t, where t is the time in years? ROund to the nearest hundredth year.
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johndoe
Sep 6, 2016
0
417
2
Retirement fund
If I want 1.5 million dollars by the time in age 60 and I'm 15 now, how much do I have to save from age 15 to age 60
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Guest
Sep 6, 2016
0
366
0
math
1/2x=20
Guest
Sep 6, 2016
0
6635
1
+24
Suppose that ln2=a and ln5=b. Use properties of logarithms to write each log in terms of a and b. -> ln20
Suppose that ln2=a and ln5=b. Use properties of logarithms to write each log in terms of a and b. -> ln20
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johndoe
Sep 6, 2016
0
444
0
Emily
6 1/2 pounds is how many grams
Guest
Sep 6, 2016
0
556
1
Eulers number question
Can someone help me with some formulas involving the constant e for the following problem: 2 Numbers keep increasing eachother by 30% of the current value of the other one.
Specific numbers: a=1000 and b=1300. A gets increased by
read more ..
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Guest
Sep 6, 2016
0
647
0
+24
Change the exponential expression to an equivalent expression involving a logarithm. 32^4/5=16
Change the exponential expression to an equivalent expression involving a logarithm. 32^4/5=16
johndoe
Sep 6, 2016
0
444
1
Where did the 7 come from in 20/3=6.6666666666667?
Where did the 7 come from in 20/3=6.6666666666667?
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Guest
Sep 6, 2016
0
972
1
+24
Approximate the value using a calculator. Express answer rounded to three decimal places. 6^1.4
Approximate the value using a calculator. Express answer rounded to three decimal places. 6^1.4
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johndoe
Sep 6, 2016
0
469
1
what is 2 times 2
what is 2 times 2
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Guest
Sep 6, 2016
0
483
1
The courageous one
What's 76.65 million times 806.22 million equal?
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Guest
Sep 6, 2016
0
581
1
mathematic question
why do we have to solve math problems i'm a student not a therapist
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Guest
Sep 6, 2016
0
966
2
two-step equations
1/2x+13=9
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Guest
Sep 6, 2016
0
433
0
nhdggggggggggggggggggg
3n+14=-4
Guest
Sep 6, 2016
0
452
0
nhdggggggggggggggggggg
3n+14=-4
Guest
Sep 6, 2016
0
433
0
fraction and decimal
7/3=
Guest
Sep 6, 2016
0
428
0
draw graph
how to draw graph like f(x)=x+1
Guest
Sep 6, 2016
0
399
1
Please help
the following unit rate in meters/second. (108 kilometers)/(2 hours) = ___ m/s ?
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Guest
Sep 6, 2016
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